[Zope] image id overlap?

[Ethan Fremen]

Hi, zopes-

I've got a standard_html_header that calls <dtml-var banner>.
There is a banner in the root directory.
There is a banner in a subdirectory, too.
I assume that when index_html is called in the subdirectory, it should
show me the different banner.

When I switch directories, the image stays the same- but the alt text
changes.

When i view the image itself, it's what I want, not what gets shown.

What gives?
-- 
~mindlace